A high-precision water level measuring device

Abstract

The application relates to the technical field of liquid level measurement, and provides a high-precision water level measuring device. The device comprises a measuring module installed on the top of a water pool, a mounting plate, a shell, a servo motor, a controller, a gear, an upper arc-shaped sliding groove, a lower arc-shaped sliding groove, a sliding rod, a rack, a first stainless steel measuring needle, and a connecting guide rod. The servo motor is fixedly connected with the output shaft of the servo motor. The upper arc-shaped sliding groove and the lower arc-shaped sliding groove are detachably installed on one side of the shell. The sliding rod is slidably installed in the upper arc-shaped sliding groove and the lower arc-shaped sliding groove. The rack is arranged on one side of the sliding rod. The first stainless steel measuring needle is installed at the lower end of the sliding rod. The connecting guide rod is installed at the lower end of the shell. The device has the beneficial effects that the measuring needle is driven to descend by the motor at regular time intervals. When the end of the measuring needle contacts the water surface, a contact signal is transmitted to the controller through the water and the connecting guide rod. The controller controls the servo motor to stop moving. The descending distance of the measuring needle in twice measurement can be calculated to obtain the liquid level height in each measurement, and the evaporation amount of water in the water pool can also be obtained.

Description

Technical Field

[0001] This invention relates to the field of liquid level measurement technology, and more specifically to a high-precision water level measurement device. Background Technology

[0002] There are many types of water level measurement equipment available today, including non-contact (radar) and contact (float-type, pressure-sensing, stylus-type, etc.), each suitable for different operating conditions. Stylus-type equipment is less affected by the external environment, but due to its low level of automation, it is time-consuming and labor-intensive, unable to perform high-frequency observations, and its measurement accuracy still needs improvement, and its functionality is limited.

[0003] Therefore, this invention is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a high-precision water level measuring device to solve the technical problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a high-precision water level measuring device, comprising: a measuring module installed on the top of a water tank; wherein, a mounting plate in the measuring module is fixedly installed on the water tank, a housing is fixedly installed at one end of the mounting plate extending into the water tank, a servo motor and a controller are fixedly installed on the upper surface of the mounting plate, a gear is fixedly connected to the output shaft of the servo motor, and the gear is located inside the housing; an upper arc-shaped slide groove and a lower arc-shaped slide groove are detachably installed on one side of the housing, a sliding rod is slidably installed in the upper arc-shaped slide groove and the lower arc-shaped slide groove, a rack is provided on one side of the sliding rod, the rack meshes with the gear, a first stainless steel measuring needle is installed at the lower end of the sliding rod; a connecting guide rod is installed at the lower end of the housing.

[0006] In an optional embodiment, the sliding rod is connected to the second stainless steel measuring needle via a connecting rod. The lower ends of the first and second stainless steel measuring needles are flush, and the first and second stainless steel measuring needles move upward or downward synchronously.

[0007] In an optional embodiment, the controller is connected to a power source, and the controller controls the servo motor to drive the gear to rotate, the gear drives the rack to move, thereby causing the first stainless steel measuring needle to move up or down.

[0008] In an optional embodiment, the water in the pool is electrically connected to the controller via a connecting rod. When the end of the first stainless steel measuring needle contacts the water surface in the pool, the controller controls the servo motor to stop driving the first stainless steel measuring needle to move downward.

[0009] In an optional embodiment, when the ends of the first stainless steel measuring needle and the second stainless steel measuring needle simultaneously contact the water surface in the pool, the controller controls the servo motor to stop driving the first stainless steel measuring needle and the second stainless steel needle to move downward.

[0010] In an optional embodiment, the upper arc-shaped slide groove and the lower arc-shaped slide groove have the same structure, and the connecting block at one end of the upper arc-shaped slide groove and the lower arc-shaped slide groove is fixed in the mounting groove of the housing by bolts.

[0011] In an optional embodiment, the connecting rod is arc-shaped or straight.

[0012] In an optional embodiment, when the measuring module has only the first stainless steel measuring needle and the second stainless steel needle, the connecting rod is arc-shaped.

[0013] In an optional embodiment, when the measuring module has three or more stainless steel measuring needles, the connecting rod is linear.

[0014] In an optional embodiment, the length of the straight connecting rod is adjustable, and the lower ends of the three or more stainless steel measuring needles are aligned. In use, the front end of the straight connecting rod is located at the center of the water tank.

[0015] The beneficial effects of this invention are as follows:

[0016] (1) The present invention uses a motor to drive the measuring needle to descend automatically. When the end of the measuring needle contacts the water surface, the contact signal is transmitted to the controller through the water and the connecting rod. The controller controls the servo motor to stop moving. By calculating the descent distance of the measuring needle in two measurements, the liquid level height of each measurement can be obtained, and the amount of water evaporation in the pool can also be obtained.

[0017] (2) The present invention measures the liquid level in the pool at a specific time to obtain the amount of water evaporation. During each measurement, the water surface in the pool is sometimes not completely still. In order to measure the liquid level and evaporation more accurately, the present invention sets a first stainless steel measuring needle and a second stainless steel needle through an arc-shaped connecting rod (the arc of the arc connecting rod is the same as the arc of the pool). Only when the first stainless steel measuring needle and the second stainless steel needle are in contact with the water surface at the same time (i.e. when the water surface is in a still state) will the contact signal with the water surface be transmitted to the controller through the water and the connecting rod to control the motor to stop rotating, and at the same time, the measurement data of the corresponding time will be collected.

[0018] (3) This invention also solves the technical problem of measuring wind direction. In this case, there are three or more stainless steel measuring needles, and the connecting rod is a linear, telescopic, and adjustable rod. The three or more stainless steel measuring needles are arranged on the linear connecting rod, with the front end extending to the center of the water tank. Only when multiple stainless steel measuring needles simultaneously contact the water surface (i.e., when the water surface is stationary) is the contact signal transmitted through the water and the connecting rod to the controller to stop the motor from rotating, while simultaneously collecting measurement data for the corresponding time. It is particularly important to note that the wind direction is determined based on the contact sequence of the multiple stainless steel measuring needles with the water surface. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of a high-precision water level measuring device provided in one embodiment of the present invention;

[0021] Figure 2 This is a partial structural schematic diagram of a high-precision water level measuring device provided in one embodiment of the present invention;

[0022] The attached figures are labeled as follows:

[0023] 1-Water pool;

[0024] 2-Measuring module, 21-Mounting plate, 22-Controller, 23-Servo motor; 24-Gear, 25-Housing, 26-Upper arc-shaped slide groove, 27-Lower arc-shaped slide groove, 28-Connecting guide rod, 29-Sliding rod, 210-Rack, 211-First stainless steel measuring needle, 212-Connecting rod, 213-Second stainless steel measuring needle. Detailed Implementation

[0025] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it may be directly or indirectly located on that other component. When a component is referred to as "connected to" another component, it may be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate orientations or positions based on the accompanying drawings, and are for ease of description only, and should not be construed as limiting the technical solution. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality of" means two or more, unless otherwise explicitly defined.

[0027] Example 1

[0028] Please see the appendix Figure 1-2 The purpose of this embodiment is to provide a high-precision water level measuring device, including: a measuring module 2 installed on the top of a water tank 1; wherein, a mounting plate 21 in the measuring module 2 is fixedly installed on the water tank 1, and a housing 25 is fixedly installed at one end of the mounting plate 21 extending into the water tank 1; a servo motor 23 and a controller 22 are fixedly installed on the upper surface of the mounting plate 21; a gear 24 is fixedly connected to the output shaft of the servo motor 23; the gear 24 is located inside the housing 25; an upper arc-shaped slide groove 26 and a lower arc-shaped slide groove 27 are detachably installed on one side of the housing 25; a sliding rod 29 is slidably installed in the upper arc-shaped slide groove 26 and the lower arc-shaped slide groove 27; a rack 210 is provided on one side of the sliding rod 29; the rack 210 meshes with the gear 24; a first stainless steel measuring needle 211 is installed at the lower end of the sliding rod 29; and a connecting guide rod 28 is installed at the lower end of the housing 25.

[0029] It should be noted that the upper arc-shaped slide 26 and the lower arc-shaped slide 27 have the same structure, and the connecting block at one end of the upper arc-shaped slide 26 and the lower arc-shaped slide 27 is fixed in the mounting groove of the housing 25 by bolts.

[0030] Specifically, the controller 22 is connected to the power supply. The controller 22 controls the servo motor 23 to drive the gear 24 to rotate. The gear 24 drives the rack 210 to move, thereby driving the first stainless steel measuring needle 211 to move up or down.

[0031] In use, the water in the pool 1 is electrically connected to the controller 22 through the connecting rod 28. When the end of the first stainless steel measuring needle 211 contacts the water surface in the pool 1, the controller 22 controls the servo motor 23 to stop driving the first stainless steel measuring needle 211 to move downward.

[0032] This embodiment has a measuring needle. The measuring needle is driven by a servo motor 23 to descend automatically at regular intervals. When the end of the measuring needle contacts the water surface, the contact signal is transmitted to the controller through the water and the connecting rod 28. The controller 22 controls the servo motor 23 to stop moving and calculates and records the liquid level height at the first time point and the liquid level height at the second time point. By calculating the descent distance of the measuring needle in the two measurements, the liquid level height of each measurement can be obtained, and the amount of water evaporation in the water tank 1 can also be obtained.

[0033] Example 2

[0034] Please see the appendix Figure 1-2 The purpose of this embodiment is to provide a high-precision water level measuring device, including: a measuring module 2 installed on the top of a water tank 1; wherein, a mounting plate 21 in the measuring module 2 is fixedly installed on the water tank 1, and a housing 25 is fixedly installed at one end of the mounting plate 21 extending into the water tank 1; a servo motor 23 and a controller 22 are fixedly installed on the upper surface of the mounting plate 21; a gear 24 is fixedly connected to the output shaft of the servo motor 23; the gear 24 is located inside the housing 25; an upper arc-shaped slide groove 26 and a lower arc-shaped slide groove 27 are detachably installed on one side of the housing 25; a sliding rod 29 is slidably installed in the upper arc-shaped slide groove 26 and the lower arc-shaped slide groove 27; a rack 210 is provided on one side of the sliding rod 29; the rack 210 meshes with the gear 24; a first stainless steel measuring needle 211 is installed at the lower end of the sliding rod 29; and a connecting guide rod 28 is installed at the lower end of the housing 25.

[0035] It should be noted that the upper arc-shaped slide 26 and the lower arc-shaped slide 27 have the same structure, and the connecting block at one end of the upper arc-shaped slide 26 and the lower arc-shaped slide 27 is fixed in the mounting groove of the housing 25 by bolts.

[0036] Specifically, the controller 22 is connected to a power source. The controller 22 controls the servo motor 23 to drive the gear 24 to rotate, and the gear 24 drives the rack 210 to move, thereby causing the first stainless steel measuring needle 211 to move upward or downward. In this embodiment, the sliding rod 29 is connected to the second stainless steel measuring needle 213 through the connecting rod 212. The lower ends of the first stainless steel measuring needle 211 and the second stainless steel measuring needle 213 are flush, and the first stainless steel measuring needle 211 and the second stainless steel measuring needle 213 move upward or downward synchronously. The water in the pool 1 is electrically connected to the controller 22 through the connecting guide rod 28. Moreover, the connecting rod 212 is an arc-shaped connecting rod, and the arc of the arc-shaped connecting rod is the same as the arc of the pool 1.

[0037] In this embodiment, two stainless steel measuring needles are used. When the ends of the first stainless steel measuring needle 211 and the second stainless steel measuring needle 213 simultaneously contact the water surface in the pool 1, the controller 22 controls the servo motor 23 to stop driving the first stainless steel measuring needle 211 and the second stainless steel measuring needle 213 to move downwards. This avoids the problem of inaccurate measurement data when the water surface is not stationary at a specific time. When the first stainless steel measuring needle 211 and the second stainless steel measuring needle 213 do not contact the water surface at the same time, other similar time points are selected for measurement, which can more accurately measure the liquid level height and evaporation rate of the pool 1.

[0038] Example 3

[0039] The purpose of this embodiment is to provide a high-precision water level measuring device, including: a measuring module 2 installed on the top of a water tank 1; wherein, a mounting plate 21 in the measuring module 2 is fixedly installed on the water tank 1, and a housing 25 is fixedly installed at one end of the mounting plate 21 extending into the water tank 1; a servo motor 23 and a controller 22 are fixedly installed on the upper surface of the mounting plate 21; a gear 24 is fixedly connected to the output shaft of the servo motor 23; the gear 24 is located inside the housing 25; an upper arc-shaped slide groove 26 and a lower arc-shaped slide groove 27 are detachably installed on one side of the housing 25; a sliding rod 29 is slidably installed in the upper arc-shaped slide groove 26 and the lower arc-shaped slide groove 27; a rack 210 is provided on one side of the sliding rod 29; the rack 210 meshes with the gear 24; a first stainless steel measuring needle 211 is installed at the lower end of the sliding rod 29; and a connecting guide rod 28 is installed at the lower end of the housing 25.

[0040] It should be noted that the upper arc-shaped slide 26 and the lower arc-shaped slide 27 have the same structure, and the connecting block at one end of the upper arc-shaped slide 26 and the lower arc-shaped slide 27 is fixed in the mounting groove of the housing 25 by bolts.

[0041] Specifically, the controller 22 is connected to a power source. The controller 22 controls the servo motor 23 to drive the gear 24 to rotate, and the gear 24 drives the rack 210 to move, thereby causing multiple stainless steel measuring needles 211 to move upward or downward. In this embodiment, the sliding rod 29 is connected to multiple other stainless steel measuring needles through the connecting rod 212. The lower ends of the multiple stainless steel measuring needles are aligned, and all stainless steel measuring needles move upward or downward synchronously under the drive of the servo motor 23. The water in the pool 1 is electrically connected to the controller 22 through the connecting guide rod 28. Moreover, the connecting rod 212 is a straight connecting rod, and the length of the straight connecting rod 212 is adjustable. In use, the front end of the straight connecting rod 212 is located at the center of the pool 1.

[0042] In this embodiment, there are three or more stainless steel measuring needles. When the tips of multiple stainless steel measuring needles simultaneously contact the water surface in the pool 1, the controller 22 controls the servo motor 23 to stop driving the multiple stainless steel needles downward, avoiding the problem of inaccurate measurement data when the water surface is not stationary at a specific time. When multiple stainless steel needles 213 do not contact the water surface simultaneously, other similar time points are selected for measurement, which can more accurately measure the liquid level and evaporation rate of the pool 1. It should be noted that the wind direction is determined according to the contact sequence of multiple stainless steel measuring needles with the water surface. For example, when the wind blows from one side to the edge of the pool 1, the water surface in the middle of the pool 1 will last contact the stainless steel needle with the straight connecting rod located in the middle of the pool 1, while the water at the edge of the pool 1 will first contact the stainless steel needle with the straight connecting rod located at the edge of the pool 1. The wind direction is determined according to the corresponding contact sequence of the stainless steel needles with the water surface of the pool 1. This device can not only measure the liquid level and evaporation rate, but also measure the wind direction, and has the characteristics of multi-functional use.

[0043] In the above embodiments, the gear drive method can be replaced by a linear motor.

[0044] Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention shall be included within the scope of protection of this invention.

Claims

1. A high-precision water level measuring device, characterized in that, include: A measuring module (2) is installed on the top of a water tank (1); wherein, the mounting plate (21) in the measuring module (2) is fixedly installed on the water tank (1), and a housing (25) is fixedly installed on one end of the mounting plate (21) extending toward the water tank (1), and a servo motor (23) and a controller (22) are fixedly installed on the upper surface of the mounting plate (21), and a gear (24) is fixedly connected to the output shaft of the servo motor (23), and the gear (24) is located inside the housing (25); The housing (25) is detachably equipped with an upper arc-shaped slide groove (26) and a lower arc-shaped slide groove (27) on one side. A sliding rod (29) is slidably installed in the upper arc-shaped slide groove (26) and the lower arc-shaped slide groove (27). A rack (210) is provided on one side of the sliding rod (29). The rack (210) meshes with the gear (24). A first stainless steel measuring needle (211) is installed at the lower end of the sliding rod (29). A connecting guide rod (28) is installed at the lower end of the housing (25). When the measuring module (2) has multiple stainless steel measuring needles, the sliding rod (29) is connected to other multiple stainless steel measuring needles through the connecting rod (212). The connecting rod (212) is straight. The length of the straight connecting rod (212) is adjustable. The lower ends of the multiple stainless steel measuring needles are set flush. When in use, the front end of the straight connecting rod (212) is located at the center of the water tank (1). The number of stainless steel measuring needles is multiple. When the ends of multiple stainless steel measuring needles simultaneously contact the water surface in the pool (1), the controller (22) controls the servo motor (23) to stop driving the multiple stainless steel measuring needles to move downward. When multiple stainless steel measuring needles do not contact the water surface at the same time, other similar time points are selected for measurement. The wind direction is determined according to the contact sequence of multiple stainless steel measuring needles with the water surface.

2. The high-precision water level measuring device as described in claim 1, characterized in that, The sliding rod (29) is connected to the second stainless steel measuring needle (213) via the connecting rod (212). The lower ends of the first stainless steel measuring needle (211) and the second stainless steel measuring needle (213) are flush, and the first stainless steel measuring needle (211) and the second stainless steel measuring needle (213) move upward or downward synchronously.

3. The high-precision water level measuring device as described in claim 2, characterized in that, The controller (22) is connected to the power supply. The controller (22) controls the servo motor (23) to drive the gear (24) to rotate. The gear (24) drives the rack (210) to move, thereby driving the first stainless steel measuring needle (211) to move up or down.

4. The high-precision water level measuring device as described in claim 3, characterized in that, The water in the pool (1) is electrically connected to the controller (22) via the connecting guide rod (28). When the end of the first stainless steel measuring needle (211) contacts the water surface in the pool (1), the controller (22) controls the servo motor (23) to stop driving the first stainless steel measuring needle (211) to move downward.

5. The high-precision water level measuring device as described in claim 4, characterized in that, When the ends of the first stainless steel measuring needle (211) and the second stainless steel measuring needle (213) simultaneously contact the water surface in the pool (1), the controller (22) controls the servo motor (23) to stop driving the first stainless steel measuring needle (211) and the second stainless steel measuring needle (213) to move downward.

6. The high-precision water level measuring device as described in claim 1, characterized in that, The upper arc-shaped slide (26) and the lower arc-shaped slide (27) have the same structure. The connecting block at one end of the upper arc-shaped slide (26) and the lower arc-shaped slide (27) is fixed in the mounting groove of the housing (25) by bolts.

7. The high-precision water level measuring device as described in claim 2, characterized in that, The connecting rod (212) is either arc-shaped or straight.

8. The high-precision water level measuring device as described in claim 7, characterized in that, When the measuring module (2) has only the first stainless steel measuring needle (211) and the second stainless steel measuring needle (213), the connecting rod (212) is arc-shaped.

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